Total bridges
615
Public highway bridges in Monroe County
County profile · official public datasets
Monroe County, NY
615 public highway bridges tracked in the FHWA National Bridge Inventory: 36.4% rated Good, 52.7% Fair, 10.9% Poor.
- 615
- Public bridges
- 36.4%
- Good condition
- 10.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Monroe County posts a higher-than-median Poor-condition share among rated counties in the state across large county bridge inventory.
- 40th
- of 62 on Poor share
- 10.9%
- Poor-condition share
- 615
- public highway bridges
- 1975
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Monroe County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Monroe County ranks #40 of 62 New York counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 10.9%). Monroe County, New York contains 615 public highway bridges. Roughly 36.4% are rated “Good,” 52.7% “Fair,” and 10.9% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
36.4%
224 of 615 rated 7-9
Fair condition
52.7%
324 of 615 rated 5-6
Poor condition
10.9%
67 of 615 rated 4 or below
In-state Poor-share rank
#40 of 62
Among New York counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 615 NBI-tracked bridges by lowest applicable component rating.
Good 36.4% (224)
Fair 52.7% (324)
Poor 10.9% (67)
Monroe County's Poor-condition bridges carry 1,046,289 vehicle crossings a day
That is 10.8% of the county's reported daily bridge traffic on 10.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 15,853 crossings a day against 13,825 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 608 of 615 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
48.8% of Monroe County's bridges have passed the 50-year mark
300 of the 615 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 36.4% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 9.4% of the county's Poor-condition bridge traffic
RTE 590 over RTE 286, built 1960, carries 97,989 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 67-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,046,289 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Monroe County's bridges were built
615 bridges with a recorded construction year, grouped by decade
- pre-1900 5
Built before 1900
5 bridges
- 1900s 5
1900–1909
5 bridges
- 1910s 15
1910–1919
15 bridges
- 1920s 10
1920–1929
10 bridges
- 1930s 23
1930–1939
23 bridges
- 1940s 9
1940–1949
9 bridges
- 1950s
1950–1959
64 bridges
- 1960s
1960–1969
112 bridges
- 1970s
1970–1979
81 bridges
- 1980s
1980–1989
94 bridges
- 1990s
1990–1999
96 bridges
- 2000s
2000–2009
56 bridges
- 2010s 38
2010–2019
38 bridges
- 2020s 7
2020–2029
7 bridges
What this shows Construction peaked in the 1960s, when 112 of the county's bridges still in the inventory were built, which is 18.2% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1975) matches the New York average (1972).
How Monroe County compares with New York's closest counties by inventory size
The 5 New York counties nearest Monroe County in number of bridges, with their condition splits. Its 10.9% Poor share is the 5th-lowest of these 6. Its average build year of 1975 against a peer-group mean of 1976 is in line with the group.
Showing the 5 closest of 61 New York counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Steuben County | 627 | 41.5% | 54.4% | 4.1% | 1984 |
| Monroe County (this page) | 615 | 36.4% | 52.7% | 10.9% | 1975 |
| Chautauqua County | 559 | 44% | 46.3% | 9.7% | 1977 |
| Queens County | 514 | 30.4% | 62.3% | 7.4% | 1966 |
| Oneida County | 496 | 46.2% | 42.3% | 11.5% | 1972 |
| Cattaraugus County | 484 | 55.4% | 38.4% | 6.2% | 1982 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Monroe County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Monroe County, both outside New York so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside NY (615 bridges here).
- Weld County, CO · 614 bridges
- Allen County, IN · 613 bridges
- Contra Costa County, CA · 618 bridges
- Brazoria County, TX · 618 bridges
Similar average build year
Nearest mean year-built outside NY (1975 here).
- San Bernardino County, CA · avg 1975 · 1,422 bridges
- Lane County, OR · avg 1975 · 1,010 bridges
- Fulton County, GA · avg 1975 · 775 bridges
- Westmoreland County, PA · avg 1975 · 620 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (615)
WEGMAN ROAD
PoorOver: RTE I490
1.1MI E JCT I490EXT+386, Monroe, NY
Built 1963 Load: 48.1 t ADT: 9,186
RTE 947A
PoorOver: ROUND POND CREEK
5.5MI E JCT LOSP+RTE 261, Monroe, NY
Built 1955 Load: 49.0 t ADT: 13,586
RTE 104
PoorOver: CARTER STREET
1.4MI E JCT104+GENESEE R, Monroe, NY
Built 1969 Load: 49.0 t ADT: 36,945
RTE 390
PoorOver: MAIDEN LANE
1.2 MI N JCT SH390 &SH104, Monroe, NY
Built 1983 Load: 49.9 t ADT: 23,428
NORTH STREET
PoorOver: 940T940T43011011 RTE 94
JCT OF NORTH ST&I.L., Monroe, NY
Built 1962 Load: 50.8 t ADT: 12,627
EAST MAIN STREET
PoorOver: 940T940T43011015 RTE 94
JCT E MAIN ST & I.L., Monroe, NY
Built 1965 Load: 52.5 t ADT: 18,175
RTE 31
PoorOver: 490I490I43022049 RTE I4
JCT S.H.31 & I490, Monroe, NY
Built 1959 Load: 52.6 t ADT: 11,219
VINTAGE LANE
PoorOver: 390 390 43011052 RTE 39
1.7MI NO JCT RTS 104&390, Monroe, NY
Built 1983 Load: 52.6 t ADT: 12,315
CULVER ROAD
PoorOver: 490I490I43022055 RTE I4
2.2MI W JCT I490EAST+441, Monroe, NY
Built 1959 Load: 53.5 t ADT: 13,884
RTE I490
PoorOver: CSX TRANS/W SHORE
0.6MI E JCT RTSI490WB+259, Monroe, NY
Built 1963 Load: 54.4 t ADT: 13,715
RTE 947A
PoorOver: LARKIN CREEK
3.5MI E JCT LOSP&RTE 261, Monroe, NY
Built 1955 Load: 55.3 t ADT: 6,051
SOUTH GOODMAN ST
PoorOver: 490I490I43022045 RTE I4
JCT I490 EAST + GOODMAN, Monroe, NY
Built 1959 Load: 55.3 t ADT: 11,784
SCIO STREET
PoorOver: 940T940T43011013 RTE 94
.3 MI E JCT NORTH ST & IL, Monroe, NY
Built 1965 Load: 55.3 t ADT: 5,106
RTE I390
PoorOver: RTE 253
JCT OF RTS 390I & 253, Monroe, NY
Built 1980 Load: 63.5 t ADT: 31,059
RTE 65
PoorOver: HONEOYE CREEK
3.0 MI S.JCT RTS 65 & 251, Monroe, NY
Built 1983 Load: 80.7 t ADT: 6,695
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.